I just checked the link and you know, they couldn't even take the time to spell check - they misspelled "Diet" and one of their webpages is 'currenty' under construction.
Gotta love the name of one of their other products: "Anti-Wrinkly Oil"
I didn't see any ingredients listed, but if it's soy protein, skim milk powder and 'honey powder' (i.e. sugar) then like Suzanne said, it's no different than a ton of other products out on the market. (I skimmed through the studies and most of them are just general studies showing - surprise! - that people who reduced their caloric intake and increased their activity lost weight. (now who would've thought of that?!?)
and a 17.6 oz can of protein powder for $35 - you could go to Trader Joe's and get pretty much the same thing for around $10.00 if memory serves. Eeeccch.